Which element has the greatest density at STP?

(1) magnesium (3) barium

(2) beryllium (4) radium

Why does a blimp flying around the super bowl have potential energy

36cm/sec to m/hr I need the dimensional analysis for this equation.

Hydrochloric acid (HCl) and potassium hydroxide (KOH) react together in an aqueous solution. Along with water, what is a product of the reaction?

Which statement is true? Inertia causes bodies to slow in their motion, unless they're pushed by a force. Inertia resists changes to the state of motion of a body. Inertia decelerates a body. Inertia is due to friction.

How many moles of oxygen are needed to react with 7.5 moles of aluminum?

Which of these is an example of a chemical change? Deflating a rubber balloon Combining rubber with sulfur Stretching an elastic rubber band Erasing pencil marks from a page

A gas is contained in a thick walled balloon. When the pressure change from __ torr to 777 torr, the volume changes from 2.58 L to 1.53 L and the temperature changes from 368 K to 495 K

Identify whether the following example is qualitative or quantitative data. the texture of a leaf:

In the ideal gas equation, 'n' represents the:

Protons and neutrons are composed of what? A electrons B. quarks C. ions D. molecules